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<p>The aim of this study is to investigate the impact of laser surface melting on the surface properties of FeNb-reinforced Al<b>-</b>Cu<b>-</b>Ni composites. The manufacturing process involves a two-step electromagnetic stir-casting method to fabricate the composites with FeNb particle reinforcement. Subsequently, the composite surface undergoes re-melting using a 2.5&#xa0;kW CO<sub>2</sub> laser under varying parameters. Changes in surface microstructure are observed pre- and post-laser surface melting. The laser treatment results leading to the formation of a more refined microstructure with improved distribution of reinforcing phases. Substantial enhancements in microhardness, wear, and corrosion resistance are noted following laser surface melting. These findings contribute to understanding laser surface melting as a viable technique for enhancing the performance of metal-composites, with potential applications in aerospace, automotive, and structural engineering industries.</p>

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Enhancing Surface Integrity of Al–Cu–Ni Composites with FeNb Reinforcement Through Laser Surface Melting

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Kumara Swamy Pulisheru,
  • Praveen Kumar Bannaravuri,
  • Gadudasu Babu Rao,
  • K. CH. Appa Rao,
  • Pulivarti Srinivasa Rao,
  • Shanthi Raju Meenuga,
  • Anil Kumar Birru,
  • Tadala Ravi

摘要

The aim of this study is to investigate the impact of laser surface melting on the surface properties of FeNb-reinforced Al-Cu-Ni composites. The manufacturing process involves a two-step electromagnetic stir-casting method to fabricate the composites with FeNb particle reinforcement. Subsequently, the composite surface undergoes re-melting using a 2.5 kW CO2 laser under varying parameters. Changes in surface microstructure are observed pre- and post-laser surface melting. The laser treatment results leading to the formation of a more refined microstructure with improved distribution of reinforcing phases. Substantial enhancements in microhardness, wear, and corrosion resistance are noted following laser surface melting. These findings contribute to understanding laser surface melting as a viable technique for enhancing the performance of metal-composites, with potential applications in aerospace, automotive, and structural engineering industries.